package org.jetnuke.modules.blog;

import org.apache.log4j.Logger;

import java.util.Iterator;
import java.util.List;
import java.util.Random;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.velocity.VelocityContext;
import org.jetnuke.common.ActionForward;
import org.jetnuke.common.IAction;
import org.jetnuke.common.IAdminInfo;
import org.jetnuke.common.IModuleInfo;
import org.jetnuke.common.IUserInfo;
import org.jetnuke.dao.BlogCategoryDAO;
import org.jetnuke.dao.BlogPostDAO;
import org.jetnuke.dao.DataAccessDriver;
import org.jetnuke.entities.BlogCategory;
import org.jetnuke.util.JetUtil;

public class DelCategory implements IAction {
	/**
	 * Logger for this class
	 */
	private static final Logger logger = Logger.getLogger(DelCategory.class);

	int id;

	public ActionForward exec(HttpServletRequest request,
			HttpServletResponse response, VelocityContext vc, IModuleInfo info,
			String op, IUserInfo ui, IAdminInfo ai) throws Exception {
		if (logger.isDebugEnabled()) {
			logger
					.debug("exec(HttpServletRequest, HttpServletResponse, VelocityContext, IModuleInfo, String, IUserInfo, IAdminInfo) - start"); //$NON-NLS-1$
		}

		if (ui == null || ui.getID() < 2)
			return null;
		int uid = ui.getID();

		BlogCategoryDAO bcm = DataAccessDriver.getInst().newBlogCategoryDAO();
		BlogCategory cat = bcm.retrieveByPK(id);
		if (cat.getAID() != uid)
			return null;
		if (cat.getPARENTID() < 0)
			return null;
		List ls = bcm.selectByUser(uid);
		Iterator it = ls.iterator();
		BlogCategory futureCategory = null;
		while (it.hasNext()) {
			BlogCategory bc = (BlogCategory) it.next();
			if (bc.getPARENTID() == -1) {
				futureCategory = bc;
				break;
			}
		}
		if (futureCategory != null) {
			BlogPostDAO bpm = DataAccessDriver.getInst().newBlogPostDAO();
			bpm.changeCategory(id, futureCategory.getID());
			bcm.deleteCategory(id);
		}
		JetUtil.redirect(vc, response, request.getContextPath()
				+ "/do/blog/categories?rand=" + new Random().nextInt());

		if (logger.isDebugEnabled()) {
			logger
					.debug("exec(HttpServletRequest, HttpServletResponse, VelocityContext, IModuleInfo, String, IUserInfo, IAdminInfo) - end"); //$NON-NLS-1$
		}
		return null;
	}

	public void setId(int id) {
		this.id = id;
	}
}
